View Full Version : Trying to bleed clutch, Gray fluid comes out !?


nycgps
06-22-2009, 05:59 PM
Errr ... I dont know wtf is going on.

I have some clutch issue , at first I thought my clutch bracket broke again (its not far anyway, I fixed it)

but its not.

So I was like hey, maybe its a good time to do a brake/clutch flush !

so yeah, master cylinder, front right wheel ... clutch

Here is the problem

The fluid that comes out, its GRAYYYYYYYyyyy , not clear like the brake fluid. its GRAAAAYYY

Been thru 2 bottles already still same thing.

so now Im thinking, is there something wrong inside the slave cylinder.

Anybody had some "experience" like that before ?


Im gonna swap it back to stock old one (Im using FEED's right now) and see what happens.

cajunrx8
06-22-2009, 06:11 PM
You are generating aluminum particles in the clutch fluid. Prolly the master cly piston is wearing into the housing or slave cly piston.
Have seen it for many years on Japanese cars.
Pull them both off and start looking for the damage.

teknics
06-22-2009, 06:12 PM
Errr ... I dont know wtf is going on.

I have some clutch issue , at first I thought my clutch bracket broke again (its not far anyway, I fixed it)

but its not.

So I was like hey, maybe its a good time to do a brake/clutch flush !

so yeah, master cylinder, front right wheel ... clutch

Here is the problem

The fluid that comes out, its GRAYYYYYYYyyyy , not clear like the brake fluid. its GRAAAAYYY

Been thru 2 bottles already still same thing.

so now Im thinking, is there something wrong inside the slave cylinder.

Anybody had some "experience" like that before ?


Im gonna swap it back to stock old one (Im using FEED's right now) and see what happens.

Hey,

well now you probably better understand what i was trying to describe after putting in your motor. I have no idea where that fluid is getting that color from. My only thoughts were possible contamination from the braided line or possible contamination from the slave. It seems like there's very very small pieces of metal in it as it does have a slight shimmer to it.

kevin.

nycgps
06-22-2009, 07:08 PM
Hey,

well now you probably better understand what i was trying to describe after putting in your motor. I have no idea where that fluid is getting that color from. My only thoughts were possible contamination from the braided line or possible contamination from the slave. It seems like there's very very small pieces of metal in it as it does have a slight shimmer to it.

kevin.

yeah, when you first told me you saw some "sliver" thing I was like :scratchhe

now I 100% understand what you mean.

At first I thought it was the line too, so I swapped it out with the new one I shown you the other day.

Still same thing. :(

You are generating aluminum particles in the clutch fluid. Prolly the master cly piston is wearing into the housing or slave cly piston.
Have seen it for many years on Japanese cars.
Pull them both off and start looking for the damage.



sometimes if I step on my clutch softly, it will not bounce back up. Its like there is no back pressure at all. It just started this week. but it got so bad yesterday, I was just 10 more blocks away from the theater, I just turn back and went home. GF bitching. meh

I think it might be the slave cylinder, since I will get "gray-ish" fluid ONLY from the slave cylinder.

Its getting too dark outside Im going to replace it back to my old stock one tomorrow and see what happens.

cajunrx8
06-22-2009, 07:14 PM
Ok after reading the OP again, if the clutch pedal bracket was cracked and the push rod is at a slight angle it can push the piston into the housing and cause a one sided wear on the parts.

nycgps
06-22-2009, 07:17 PM
I only see the gray fluid from slave, shouldn't that be the caused ?

Bracket is not really cracked, its just that if you know the bracket long enough, you will know something is not right on the first slight.

I will swap the slave first tomorrow morning and see what happens. :( wish me luck :(

cajunrx8
06-22-2009, 09:50 PM
Sure will.

ferg
06-22-2009, 10:20 PM
how do you even take a cluch out lol

nycgps
06-23-2009, 04:54 PM
To take a clutch out? drop the transmission

if you mean take the slave cylinder out, yeah, its pain in the ass, but I got it out, took me 3 hours tho. :(

BTW. I took the FEED's cylinder out and put the OE back in. well, the Clutch bracket works again :) so Its safe to say yes the FEED's cylinder was shot BUT !!!!

I still get gray fluid even after I swap the clutch and the clutch line.

Pictures or it never happened :)

http://www.rx8club.com/attachment.php?attachmentid=140951&stc=1&d=1245790120

This is what comes out AFTER I swap the old rx7.com's clutch line with a FEED's Clutch Line AND swap back to the OE Slave Cylinder. Same as before, just not as dark gray as before

http://www.rx8club.com/attachment.php?attachmentid=140952&stc=1&d=1245790120

Another angle.

http://www.rx8club.com/attachment.php?attachmentid=140953&stc=1&d=1245790120

WTF are these ?!?!?!?!

The Brake Fluid Reservoir's liquid is ALL clear. no contamination whatsoever. The Clutch line is brand new. oh yes before I reinstall the OE Slave cylinder, I push some liquid outa it, its all clear.

So What Im thinking now is, its something between the Master Cylinder and Stainless steel clutch line thats failing.

so, anybody have any idea what it could be? :( I dont want to keep swapping parts until "I GOT IT." its a waste of money :(

alz0rz
06-23-2009, 04:58 PM
i've got a hunch the "new" braided line is contaminating it somehow

nycgps
06-23-2009, 05:06 PM
the clutch works again like the way it should. but I have a feeling if I leave it like this, its going to eat my OE Slave cylinder alive, just like it ate my FEED's Cylinder :(

WHAT THE #*$#@)*$ MAN ... :(

Huey52
06-23-2009, 05:10 PM
I swear nycgps, for a guy that does so much preventive maintenace you sure have your unfair-share of problems. You're giving '05 Shinka's a bad name! ;)

nycgps
06-23-2009, 05:16 PM
*sigh...*


what can I say ... the force is not with me ... :(

so ok, can SOMEBODY tell me "WTF IS GOING ON HERE !!?!@#)*#%*)$@%" ...

Easy_E1
06-23-2009, 05:16 PM
I'm feeling that the issue is in the clutch master cyl. It feeds fluid to the slave cyl. So I might consider looking into that.
Just a thought.

04RX8man
06-23-2009, 06:06 PM
IF you r getting clear fluid out of the slave then it has to be somewhere in the line...

nycgps
06-23-2009, 06:39 PM
IF you r getting clear fluid out of the slave then it has to be somewhere in the line...

its somwhere between the stainless steel clutch line and Master Brake Cylinder.


I'm feeling that the issue is in the clutch master cyl. It feeds fluid to the slave cyl. So I might consider looking into that.
Just a thought.

I think so too.

Now Im just wondering what could be the "possible" worn out part. I do NOT want to replace the whole thing ... spent too much $$$ lately :(

cajunrx8
06-24-2009, 09:25 PM
The clutch hyl line should be a teflon tube surrounded by the SS braid. pretty much bullet proof.
I suggest that you remove the complete system, flush everything with alcohol or brake cleaner, flush the ass outta the lines then inspect all parts.
Bro, that is the only way to be sure, it is a ungodly PITA but needs to be done.

Razz1
06-24-2009, 10:13 PM
I think its a bad line. easy to replace.

If you change the fluid it has to come out clear after a while.

The question is... how fast does it turn grey after the fluid has been flushed.

nycgps
06-24-2009, 10:43 PM
The clutch hyl line should be a teflon tube surrounded by the SS braid. pretty much bullet proof.
I suggest that you remove the complete system, flush everything with alcohol or brake cleaner, flush the ass outta the lines then inspect all parts.
Bro, that is the only way to be sure, it is a ungodly PITA but needs to be done.

I already ordered a new Clutch Master Cylinder. Just in case. Its not that expensive for me, thank god for that (ordered thru MMS)

I think its a bad line. easy to replace.

If you change the fluid it has to come out clear after a while.

The question is... how fast does it turn grey after the fluid has been flushed.

I flushed thru 2 quarts even after I replaced old SS clutch line with a brand new one and back to OE Slave cylinder. so it gotta come from some where BEFORE the SS clutch line. The only "suspect" is the clutch master cylinder. Since the Brake Master's reservoir is perfectly clear.

Didnt have time to check it out today, I drove to PA (3 hours something 1 way) to pick up something for my FC.

Tomorrow Im going to open the SS Clutch line and just pump my clutch to see what kind of color will it come out.

Easy_E1
06-24-2009, 11:07 PM
What were the chunks in the bottom of the cup? Were they rubber?


http://www.rx8club.com/attachment.php?attachmentid=140953&stc=1&d=1245790120

nycgps
06-24-2009, 11:18 PM
honestly, I dont know.

I still have the quart in my basement, I go feel it tomorrow morning.

swoope
06-25-2009, 02:35 AM
have you visited this tsb?

http://www.finishlineperformance.com/pdf/rx8/bulletin/05-004-06-1641a.pdf

just wondering..

beers :beer:

nycgps
06-25-2009, 07:44 AM
Nah, its not that.

it does not explain the gray fluid anyway. :(

TeamRX8
06-26-2009, 10:43 AM
take the clutch hydraulic line loose at the master brake cylinder and see if you have the crud coming out there

glad to be of service, signed

Capt. Obvious

nycgps
06-26-2009, 12:18 PM
^^ Yea was about to do that today.

My clutch Master is not here yet, so I parked my car at my gf's garage. and drove the FIT back home.

Will work on it probably tomorrow or monday.

teknics
06-26-2009, 01:57 PM
only thing it could be is that clutch master then. The hose feeding the clutch master from the brake reservoir is rubber, wouldnt cause gray fluid. if the brake master was causing it then the reservoir would be gray, but its not. So i think if you replace the clutch master then you should be good, i cant imagine what else it could even be.

kevin.

cajunrx8
07-01-2009, 08:44 PM
any news on the gray crap??? Just checking in on ya bro.

alz0rz
07-01-2009, 09:26 PM
i think it made nycgps nuts so he jumped off a bridge

RIP Buddy :(

cajunrx8
07-01-2009, 09:34 PM
Holy S@$T thats funny!!!
I feel his pain.

04RX8man
07-01-2009, 10:32 PM
RIP NYCGPS!!!.....we will keep on the NOOBS for searching just in your honor!! haha

C Ya L8r
07-03-2009, 12:24 PM
What kind of fluid are you using? DOT 5? A friend of mine used this on an older car and it did the same thing to his fluid. DOT 5 eats the ruber seals over time. Not a cheap mistake on a car that has ABS.

dozer
07-03-2009, 12:40 PM
omg i hope mine doesnt turn out like this...gonna start in a bit too

nycgps
07-03-2009, 03:33 PM
any news on the gray crap??? Just checking in on ya bro.

i think it made nycgps nuts so he jumped off a bridge

RIP Buddy :(

Holy S@$T thats funny!!!
I feel his pain.

RIP NYCGPS!!!.....we will keep on the NOOBS for searching just in your honor!! haha

just so u guys know ... nycgps would NOT die until i become someone who can take this car apart and put it back in one piece with my eyes closed ! mu ha ha ...

What kind of fluid are you using? DOT 5? A friend of mine used this on an older car and it did the same thing to his fluid. DOT 5 eats the ruber seals over time. Not a cheap mistake on a car that has ABS.

im not n00b/hate my car enough to do that.

i only use dot 4.

omg i hope mine doesnt turn out like this...gonna start in a bit too

hope not... well, it ate my FEED Fujita engineering big clutch release which cost like 300 bux ...

i never had time the pass week cuz i got work plus im working on my fc right now ... but today im gonna take the master clutch out and see what sup ...

dozer
07-03-2009, 03:41 PM
nyc, mine came out PERFECT no issues, last night we didnt tighten down the bolt, thus the reason we didnt have to feed back, did it this morning and all went well!

heres what my bracket looked like

nycgps
07-03-2009, 05:27 PM
thats cool to hear ;)

I just got home and gonna start my clutch master replacement ... wish me luck lol

dozer
07-03-2009, 05:44 PM
good luck!

nycgps
07-03-2009, 06:30 PM
LIVE FROM NYCGPS @ NYCGPS's HOME

http://www.rx8club.com/attachment.php?attachmentid=141637&stc=1&d=1246660144

yes, clutch master is shot :(

Gray fluid comes outa both da holes O_o something inside is broken ... Im going to "autopsy" it probably monday or tuesday.

http://www.rx8club.com/attachment.php?attachmentid=141638&stc=1&d=1246660144

Old(On top of the container) and new (the one on the floor) and the box (for the new + gasket thats not in the picture)

gonna put in the new one now and bleed ...

nycgps
07-03-2009, 08:37 PM
Done.

Damn it was hard to bleed a "dry, brand new" clutch master. Took me like 50 pumps or something ... arms are tired ...

Special thx to my GF :) who helped me thru-out the whole process (got like 5 mosquito bites too :()

but At least all fluids are "clear" now :ylsuper:

ok, so yeah, if anybody sees gray fluid outa its slave, ur master is shot, surprisingly its not a really expensive part.

gg :)

swoope
07-04-2009, 01:03 AM
very interesting.


where is this said piece located? and any clue what failed inside to cause this? it really looks nasty..

beers :beer:

dozer
07-04-2009, 01:25 AM
good job!!!!!! im glad mine didnt turn out like that...

nycgps
07-04-2009, 01:40 AM
very interesting.


where is this said piece located? and any clue what failed inside to cause this? it really looks nasty..

beers :beer:

its right next to the Brake Master Cylinder.

ever wonder where did those 2 bolt thing that connects your clutch pedal comes from? thats it :) its right behind the clutch pedal, the other side of the firewall


Its probably the piston inside that failed. Im gonna take it apart on monday or tuesday. will take pics and put it on here.

pics or it didnt happen, rite ? :lol:

beers :beer05:

swoope
07-04-2009, 01:43 AM
never seen it..


but i have also never had a pedal fail..

and i believe it. your photos so far have covered it..

good job! :)

would love to know the cause.. as this is a very odd one.

beers :beer:

alz0rz
07-04-2009, 01:45 AM
HE LIVESSS

good job buddy

but like other ppl say, for so much preventive maintenance your car just hates you lol

;)

nycgps
07-04-2009, 02:04 AM
never seen it..


but i have also never had a pedal fail..

and i believe it. your photos so far have covered it..

good job! :)

would love to know the cause.. as this is a very odd one.

beers :beer:

i never notice the clutch master, but its there. just pop the hood, look at the Brake master, then look to the RIGHT. you will see it.

HE LIVESSS

good job buddy

but like other ppl say, for so much preventive maintenance your car just hates you lol

;)

my car hates me ... maybe ... cuz ... I slap that bitch too hard & too often ... :sweatdrop

dozer
07-04-2009, 02:05 AM
im pretty sure your car forgives you

nycgps
07-04-2009, 11:26 AM
this car gave me a lot of commotions ... just like girls ... :lol:

Huey52
07-04-2009, 05:04 PM
Changed my coolant today and while under there took a look at my clutch master cyclinder - it's in great shape.

Glad you got it sorted out nycgps and also thanks for absorbing yet another '05 Shinka oddity so the rest of us don't have to. (j/k) ;)

Easy_E1
07-04-2009, 05:44 PM
Well the mystery is solved. Glad ya figured it out.

nycgps
07-04-2009, 06:45 PM
Well the mystery is solved. Glad ya figured it out.

yeah, but it cost me 370 bux :(

Its not even suppose to fail at around 52K miles :(

(70 bux for the clutch master, and the old one killed my 300 bux Fujita eng slave :()

TeamRX8
07-04-2009, 07:55 PM
poop happens

nycgps
07-04-2009, 09:03 PM
I gotta say thats A LOT of poop ...

swoope
07-05-2009, 01:50 AM
sorry,

do we really have a clue as to what caused this???

maybe at best the seal failed. did that cause the brown pooo?

this is odd, very odd.. i have seen this before, but in a motorcycle clutch vs engine mode.


beers :beer:

nycgps
07-05-2009, 08:50 AM
I will take it apart tomorrow or tuesday ... :)

cajunrx8
07-05-2009, 02:22 PM
Bro what did I tell ya, been at this shit as a job since 82, been working on asian cars with my dad for alot longer.
We used to scan the used car ads for broken jap cars to fix up and drive or sell.
Your clutch cyl is only the 200th one I saw do this.
Glad you got it fixed.